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binaries/gtk-2.22.1/include/pango-1.0/pango/pango-ot.h

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  1. /* Pango

  2.  * pango-ot.h:

  3.  *

  4.  * Copyright (C) 2000,2007 Red Hat Software

  5.  *

  6.  * This library is free software; you can redistribute it and/or

  7.  * modify it under the terms of the GNU Library General Public

  8.  * License as published by the Free Software Foundation; either

  9.  * version 2 of the License, or (at your option) any later version.

  10.  *

  11.  * This library is distributed in the hope that it will be useful,

  12.  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  13.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU

  14.  * Library General Public License for more details.

  15.  *

  16.  * You should have received a copy of the GNU Library General Public

  17.  * License along with this library; if not, write to the

  18.  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,

  19.  * Boston, MA 02111-1307, USA.

  20.  */

  21. 

  22. #ifndef __PANGO_OT_H__

  23. #define __PANGO_OT_H__

  24. 

  25. #include <pango/pangofc-font.h>

  26. #include <pango/pango-glyph.h>

  27. #include <pango/pango-font.h>

  28. #include <pango/pango-script.h>

  29. #include <pango/pango-language.h>

  30. 

  31. G_BEGIN_DECLS

  32. 

  33. #ifdef PANGO_ENABLE_ENGINE

  34. 

  35. typedef guint32 PangoOTTag;

  36. 

  37. #define PANGO_OT_TAG_MAKE(c1,c2,c3,c4)		((PangoOTTag) FT_MAKE_TAG (c1, c2, c3, c4))

  38. #define PANGO_OT_TAG_MAKE_FROM_STRING(s)	(PANGO_OT_TAG_MAKE(((const char *) s)[0], \

  39. 								   ((const char *) s)[1], \

  40. 								   ((const char *) s)[2], \

  41. 								   ((const char *) s)[3]))

  42. 

  43. typedef struct _PangoOTInfo       PangoOTInfo;

  44. typedef struct _PangoOTBuffer     PangoOTBuffer;

  45. typedef struct _PangoOTGlyph      PangoOTGlyph;

  46. typedef struct _PangoOTRuleset    PangoOTRuleset;

  47. typedef struct _PangoOTFeatureMap PangoOTFeatureMap;

  48. typedef struct _PangoOTRulesetDescription PangoOTRulesetDescription;

  49. 

  50. typedef enum

  51. {

  52.   PANGO_OT_TABLE_GSUB,

  53.   PANGO_OT_TABLE_GPOS

  54. } PangoOTTableType;

  55. 

  56. #define PANGO_OT_ALL_GLYPHS			((guint) 0xFFFF)

  57. #define PANGO_OT_NO_FEATURE			((guint) 0xFFFF)

  58. #define PANGO_OT_NO_SCRIPT			((guint) 0xFFFF)

  59. #define PANGO_OT_DEFAULT_LANGUAGE		((guint) 0xFFFF)

  60. 

  61. #define PANGO_OT_TAG_DEFAULT_SCRIPT		PANGO_OT_TAG_MAKE ('D', 'F', 'L', 'T')

  62. #define PANGO_OT_TAG_DEFAULT_LANGUAGE		PANGO_OT_TAG_MAKE ('d', 'f', 'l', 't')

  63. 

  64. /* Note that this must match hb_glyph_info_t */

  65. struct _PangoOTGlyph

  66. {

  67.   guint32  glyph;

  68.   guint    properties;

  69.   guint    cluster;

  70.   gushort  component;

  71.   gushort  ligID;

  72. 

  73.   guint    internal;

  74. };

  75. 

  76. struct _PangoOTFeatureMap

  77. {

  78.   char     feature_name[5];

  79.   gulong   property_bit;

  80. };

  81. 

  82. struct _PangoOTRulesetDescription {

  83.   PangoScript               script;

  84.   PangoLanguage            *language;

  85.   const PangoOTFeatureMap  *static_gsub_features;

  86.   guint                   n_static_gsub_features;

  87.   const PangoOTFeatureMap  *static_gpos_features;

  88.   guint                   n_static_gpos_features;

  89.   const PangoOTFeatureMap  *other_features;

  90.   guint                   n_other_features;

  91. };

  92. 

  93. 

  94. #define PANGO_TYPE_OT_INFO              (pango_ot_info_get_type ())

  95. #define PANGO_OT_INFO(object)           (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_OT_INFO, PangoOTInfo))

  96. #define PANGO_IS_OT_INFO(object)        (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_OT_INFO))

  97. GType pango_ot_info_get_type (void) G_GNUC_CONST;

  98. 

  99. #define PANGO_TYPE_OT_RULESET           (pango_ot_ruleset_get_type ())

  100. #define PANGO_OT_RULESET(object)        (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_OT_RULESET, PangoOTRuleset))

  101. #define PANGO_IS_OT_RULESET(object)     (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_OT_RULESET))

  102. GType pango_ot_ruleset_get_type (void) G_GNUC_CONST;

  103. 

  104. 

  105. PangoOTInfo *pango_ot_info_get (FT_Face face);

  106. 

  107. gboolean pango_ot_info_find_script   (PangoOTInfo      *info,

  108. 				      PangoOTTableType  table_type,

  109. 				      PangoOTTag        script_tag,

  110. 				      guint            *script_index);

  111. gboolean pango_ot_info_find_language (PangoOTInfo      *info,

  112. 				      PangoOTTableType  table_type,

  113. 				      guint             script_index,

  114. 				      PangoOTTag        language_tag,

  115. 				      guint            *language_index,

  116. 				      guint            *required_feature_index);

  117. gboolean pango_ot_info_find_feature  (PangoOTInfo      *info,

  118. 				      PangoOTTableType  table_type,

  119. 				      PangoOTTag        feature_tag,

  120. 				      guint             script_index,

  121. 				      guint             language_index,

  122. 				      guint            *feature_index);

  123. 

  124. PangoOTTag *pango_ot_info_list_scripts   (PangoOTInfo      *info,

  125. 					  PangoOTTableType  table_type);

  126. PangoOTTag *pango_ot_info_list_languages (PangoOTInfo      *info,

  127. 					  PangoOTTableType  table_type,

  128. 					  guint             script_index,

  129. 					  PangoOTTag        language_tag);

  130. PangoOTTag *pango_ot_info_list_features  (PangoOTInfo      *info,

  131. 					  PangoOTTableType  table_type,

  132. 					  PangoOTTag        tag,

  133. 					  guint             script_index,

  134. 					  guint             language_index);

  135. 

  136. PangoOTBuffer *pango_ot_buffer_new        (PangoFcFont       *font);

  137. void           pango_ot_buffer_destroy    (PangoOTBuffer     *buffer);

  138. void           pango_ot_buffer_clear      (PangoOTBuffer     *buffer);

  139. void           pango_ot_buffer_set_rtl    (PangoOTBuffer     *buffer,

  140. 					   gboolean           rtl);

  141. void           pango_ot_buffer_add_glyph  (PangoOTBuffer     *buffer,

  142. 					   guint              glyph,

  143. 					   guint              properties,

  144. 					   guint              cluster);

  145. void           pango_ot_buffer_get_glyphs (const PangoOTBuffer  *buffer,

  146. 					   PangoOTGlyph        **glyphs,

  147. 					   int                  *n_glyphs);

  148. void           pango_ot_buffer_output     (const PangoOTBuffer  *buffer,

  149. 					   PangoGlyphString     *glyphs);

  150. 

  151. void           pango_ot_buffer_set_zero_width_marks (PangoOTBuffer     *buffer,

  152. 						     gboolean           zero_width_marks);

  153. 

  154. const PangoOTRuleset *pango_ot_ruleset_get_for_description (PangoOTInfo                     *info,

  155. 							    const PangoOTRulesetDescription *desc);

  156. PangoOTRuleset *pango_ot_ruleset_new (PangoOTInfo       *info);

  157. PangoOTRuleset *pango_ot_ruleset_new_for (PangoOTInfo       *info,

  158. 					  PangoScript        script,

  159. 					  PangoLanguage     *language);

  160. PangoOTRuleset *pango_ot_ruleset_new_from_description (PangoOTInfo                     *info,

  161. 						       const PangoOTRulesetDescription *desc);

  162. void            pango_ot_ruleset_add_feature (PangoOTRuleset   *ruleset,

  163. 					      PangoOTTableType  table_type,

  164. 					      guint             feature_index,

  165. 					      gulong            property_bit);

  166. gboolean        pango_ot_ruleset_maybe_add_feature (PangoOTRuleset   *ruleset,

  167. 						    PangoOTTableType  table_type,

  168. 						    PangoOTTag        feature_tag,

  169. 						    gulong            property_bit);

  170. guint           pango_ot_ruleset_maybe_add_features (PangoOTRuleset          *ruleset,

  171. 						     PangoOTTableType         table_type,

  172. 						     const PangoOTFeatureMap *features,

  173. 						     guint                    n_features);

  174. guint           pango_ot_ruleset_get_feature_count (const PangoOTRuleset   *ruleset,

  175. 						    guint                  *n_gsub_features,

  176. 						    guint                  *n_gpos_features);

  177. void            pango_ot_ruleset_substitute  (const PangoOTRuleset   *ruleset,

  178. 					      PangoOTBuffer          *buffer);

  179. void            pango_ot_ruleset_position    (const PangoOTRuleset   *ruleset,

  180. 					      PangoOTBuffer          *buffer);

  181. PangoScript     pango_ot_tag_to_script     (PangoOTTag     script_tag) G_GNUC_CONST;

  182. PangoOTTag      pango_ot_tag_from_script   (PangoScript    script) G_GNUC_CONST;

  183. PangoLanguage  *pango_ot_tag_to_language   (PangoOTTag     language_tag) G_GNUC_CONST;

  184. PangoOTTag      pango_ot_tag_from_language (PangoLanguage *language) G_GNUC_CONST;

  185. 

  186. guint           pango_ot_ruleset_description_hash  (const PangoOTRulesetDescription *desc) G_GNUC_PURE;

  187. gboolean        pango_ot_ruleset_description_equal (const PangoOTRulesetDescription *desc1,

  188. 						    const PangoOTRulesetDescription *desc2) G_GNUC_PURE;

  189. PangoOTRulesetDescription *pango_ot_ruleset_description_copy  (const PangoOTRulesetDescription *desc);

  190. void            pango_ot_ruleset_description_free  (PangoOTRulesetDescription       *desc);

  191. 

  192. 

  193. #endif /* PANGO_ENABLE_ENGINE */

  194. 

  195. G_END_DECLS

  196. 

  197. #endif /* __PANGO_OT_H__ */